body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: url('bg.jpg') no-repeat center center fixed;
    background-size: cover;
}

.register-container {
    width: 400px;
    margin: 50px auto;
    background-color: #f7f6f6;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.register-title {
    color: #ffb74d;
    margin: 0 0 5px 0;
}

.register-subtitle {
    color: #9e9e9e;
    margin: 0 0 20px 0;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 3px;
    box-sizing: border-box;
}

.gender-group input {
    width: auto;
    margin-right: 5px;
}

.gender-group label {
    display: inline-block;
    margin-right: 10px;
    font-weight: normal;
}

.captcha-group {
    display: flex;
    align-items: center;
}

.captcha-group input {
    flex: 1;
    margin-right: 10px;
}

.captcha-img {
    width: 80px;
    height: 30px;
    background-color: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: #666;
    border: 1px solid #ddd;
    border-radius: 3px;
}

.register-btn {
    width: 100%;
    padding: 10px;
    background-color: #ffb74d;
    color: #fff;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    font-size: 16px;
}

.register-btn:hover {
    background-color: #ff9800;
}

.login-link {
    text-align: right;
    margin-top: 15px;
}

.login-link a {
    color: #ff5722;
    text-decoration: none;
}

.login-link a:hover {
    text-decoration: underline;
}